Not to get this thread too far off course, but I have to address the claims made by Bannie and the one quoted above.
The assertion that no one is even close to America in terms of quality of education and research is just absolutely asinine. I've been to American schools myself, including top 50s (Mayo, WUSTL, Stanford, Georgetown, Dartmouth, etc) and lower-tiered schools as well. Some of these schools are incredible (namely Mayo, Stanford and WUSTL), but I wouldn't say that they are leaps and bounds better than the top Canadian schools. I mean, just walk through the hospitals on University avenue in Toronto. If you're not impressed by them, then I'm not sure what your expectations are. At one of my interviews at WUSTL, I mentioned to the physician interviewing me that our lab was collaborating with a lab at Sick Kids. I didn't think he had heard of it, so I said that it was one of the best pediatric hospitals in the country. The faculty member stopped me (a pathologist, btw) and said "The country? Son, Sick Kids is one of the best pediatric hospitals in the world. Everyone knows that."
You conveniently mention Sunnybrook (incidentally one of our most peripherally related hospitals), but decline to mention Princess Margaret, Sick Kids, TGH, TWH, Mt Sinai (incl SLRI) and St. Michael's. Princess Margaret Hospital is one of the top cancer centers on the planet, and the Samuel Lunenfeld Research Institute at Mt. Sinai is world-renowned. Run a PubMed search of the scientists at SLRI and you can see that they EASILY stack up against any institution in the world. All you would have to do is flip through Science, Nature, Nat Med, Cell, JCI, NEJM, etc. and see that every week there is a U of T or McGill paper in at least one of these major journals. How many US institutions could you say that about? A handful, at best. Sure, you can't really compare Harvard/Stanford/Yale/MIT with UWO and Queen's, but you'd be foolish to think that those schools are representative of all American schools. Also, if you were to look at the top schools for publications and citations (I'm not talking about subjective rankings here, I'm talking about statistics), you will find U of T in the top 10 every year, McGill usually in the top 20, and tons of international research schools/institutions like Max Planck, ETH Zurich, and the University of Tokyo also in the top 10. The gap between American institutions and others around the world is slim, if not non-existent.